CN109181253A - A kind of degradable foaming biomass fiber composite material and preparation method - Google Patents
A kind of degradable foaming biomass fiber composite material and preparation method Download PDFInfo
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- CN109181253A CN109181253A CN201810995905.5A CN201810995905A CN109181253A CN 109181253 A CN109181253 A CN 109181253A CN 201810995905 A CN201810995905 A CN 201810995905A CN 109181253 A CN109181253 A CN 109181253A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
- C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
- C08J9/102—Azo-compounds
- C08J9/103—Azodicarbonamide
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/04—N2 releasing, ex azodicarbonamide or nitroso compound
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/18—Binary blends of expanding agents
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2303/00—Characterised by the use of starch, amylose or amylopectin or of their derivatives or degradation products
- C08J2303/02—Starch; Degradation products thereof, e.g. dextrin
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/04—Polyesters derived from hydroxy carboxylic acids, e.g. lactones
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2403/00—Characterised by the use of starch, amylose or amylopectin or of their derivatives or degradation products
- C08J2403/02—Starch; Degradation products thereof, e.g. dextrin
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2467/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2467/04—Polyesters derived from hydroxy carboxylic acids, e.g. lactones
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
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- Chemical Kinetics & Catalysis (AREA)
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- Polymers & Plastics (AREA)
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- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
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Abstract
The present invention relates to foamed material technical fields, more particularly to a kind of degradable foaming biomass fiber composite material and preparation method, its raw material be by 30-50 portions of modified starches, 40-50 parts of polylactic acid, 3-5 parts of silica, 2-10 parts of foaming agents and 0.5-4 parts of initiators after mixing, through density obtained from double screw extruder foam shaping by extrusion be 0.45-0.8g/cm3Degradable foaming biomass fiber composite material.Wherein, modified starch is to carry out gelatinization modification by special process by 45-60 parts of starch, 45-60 parts of distilled water, 2-8 parts of glycerol, 0.2-1 parts of maleic anhydrides to form.Composite material prepared by the present invention is obviously improved in plasticity, expansion ratio and degradability, and cost of material is low, and preparation process is simply easily controllable, is conducive to large-scale production and application.
Description
Technical field
The present invention relates to foamed material technical fields, and in particular to a kind of degradable foaming biomass fiber composite material
And preparation method thereof.
Background technique
With the rapid development of electric business and logistic industry, the electric business giant headed by Alibaba is proposed " green rows
It is dynamic ", the non-returnable container material of more than half is replaced using novel degradable package material in 5 years, to reduce packet
Fill influence of the logistics waste to environment.Especially on the padded coaming of logistics packaging, foam and bubble bags are mostly used greatly at present,
These are all nondegradable foamed plastics, cause serious influence to environment.
Polylactic acid (PLA) is a kind of thermoplasticity biodegradable material, is widely used for a long time in biomedicine field,
And by feat of higher intensity and modulus, a kind of environmental-friendly packing timber with great potential is considered as by people in recent years
Material.Starch is the biopolymer for the second largest plentifulness that nature is only second to cellulose, extremely low cost and can be dropped completely
Solution property causes people and greatly pays close attention to.Polylactic acid and starch are subjected to review foaming, are expected to replace the tradition using EPS as representative
Foamed plastics has high market prospects.But the prior art have the following deficiencies: the heat resisting temperature of (1) starch itself by
Limit makes starch in process carbonization can occur and decompose because temperature is excessively high；(2) when starch and polylactic acid are foamed by
It is not good enough in the two compatibility, to influence the degradability of foamed material；(3) degradable foaming prepared by the prior art
The plasticity of material, degradation rate and expansion ratio are to be improved, can only lead to product by adding some high-cost components
Cost has risen considerably.
Summary of the invention
It is an object of the invention to provide a kind of degradable foaming biomass fiber aiming at the shortcomings in the prior art
Composite material and preparation method, composite material prepared by this method in plasticity, expansion ratio and degradability
To being obviously improved, and cost of material is low, and preparation process is simply easily controllable.
The purpose of the present invention is achieved through the following technical solutions:
A kind of degradable foaming biomass fiber composite material is provided, is to be made of raw material from the following weight:
Wherein, the modified starch is by 45-60 parts of starch, 45-60 parts of distilled water, 2-8 parts of glycerol, 0.2-1 parts of Malaysias
Made of acid anhydrides is modified by gelatinization；
The density of the degradable foaming biomass fiber composite material is 0.45-0.8g/cm3。
Preferably, the degradable foaming biomass fiber composite material of described one kind, is by the raw material system of following parts by weight
At:
Preferably, the foaming agent is in AC foaming agent, rosin soap foaming agent, sodium bicarbonate foaming agent and ADC foaming agent
At least one.
Preferably, the initiator is any one in BPO, DCP and TPO.
It is including following the present invention also provides the preparation method of the degradable foaming biomass fiber composite material of above-mentioned one kind
Step:
Step a, under the conditions of 20-25 DEG C, after 45-60 parts of starch and 45-60 parts of distilled water are mixed and stirred for uniformly, add
Enter 2-8 parts of glycerol, 0.2-1 parts of maleic anhydrides, and is stirred continuously the mixture to form colloidal；
Step b, the mixture of colloidal is placed in water-bath or oil bath pan and carries out Heat Gelatinization, heating temperature 85-
100 DEG C, time 10-30min obtains thick colloid；
Step c, thick colloid is placed in baking oven, drying temperature is 100-120 DEG C, after toasting 10-30min, will be dried
Dry solid is crushed to 100-300 mesh, obtains modified starch；
Step d, by 30-50 portions of modified starches, 40-50 parts of polylactic acid, 3-5 parts of silica, 2-10 parts of foaming agents and
0.5-4 parts of initiators after mixing, the degradable foaming biology are arrived through double screw extruder foam shaping by extrusion
Matter fibrous composite, wherein the temperature parameter of each section of double screw extruder is as follows:
One area: 140-145 DEG C, 2nd area: 150-155 DEG C, 3rd area: 165-170 DEG C, 4th area: 170-175 DEG C, 5th area: 170-
175 DEG C, 6th area: 170-175 DEG C, 7th area: 170-175 DEG C, 8th area: 160-165 DEG C, head: 150-155 DEG C.
Preferably, the particle diameter of the degradable foaming biomass fiber composite material is 3.2-3.8mm.
Preferably, in step d, the feeding revolving speed of double screw extruder is 0.8-1.4rpm, and extrusion revolving speed is 120-
160rpm。
Beneficial effects of the present invention:
The degradable foaming biomass fiber composite material of one kind of the invention, raw material be by 30-50 portions of modified starches,
40-50 parts of polylactic acid, 3-5 parts of silica, 2-10 parts of foaming agents and 0.5-4 parts of initiators after mixing, are squeezed through twin-screw
Density obtained from machine foam shaping by extrusion is 0.45-0.8g/cm out3Degradable foaming biomass fiber composite material.
Wherein, modified starch is by 45-60 parts of starch, 45-60 parts of distilled water, 2-8 parts of glycerol, 0.2-1 parts of maleic anhydrides by special
Technique carries out gelatinization modification and forms.Using modified starch prepared by special process, the surface of starch is on the one hand substantially increased
Compatibility and plasticizing capacity, enable it is compatible with polylactic acid well, to significantly improve prepared composite material
Plasticity and degradability, another aspect modified starch improve the heat resisting temperature of starch, do not make starch in process not
Carbonization can occur and decompose because temperature is excessively high；In addition, substantially increasing expansion ratio in foaming process.With the prior art
It compares, in plasticity, expansion ratio and can be dropped using biomass fiber composite material prepared by formula and technique of the invention
Solution performance is obviously improved, density 0.45-0.8g/cm3, under compost degradation condition, by 150-190 days,
Degradation rate has reached 91-96%, and cost of material is low, and preparation process is simply easily controllable, is conducive to large-scale production and answers
With.
Specific embodiment
The invention will be further described with the following Examples.
Embodiment 1:
The preparation method of the degradable foaming biomass fiber composite material of one kind of the present embodiment, comprising the following steps:
Step a, after at 20 °C, 50 parts of starch and 50 parts of distilled water are mixed and stirred for uniformly, 4 parts of addition is sweet
Oil, 0.6 part of maleic anhydride, and it is stirred continuously the mixture to form colloidal；
Step b, the mixture of colloidal is placed in water-bath or oil bath pan and carries out Heat Gelatinization, heating temperature 95
DEG C, time 25min obtains thick colloid；
Step c, thick colloid is placed in baking oven, drying temperature is 100 DEG C, after toasting 15min, by the solid of drying
200 mesh are crushed to, modified starch is obtained；
Step d, 42 portions of modified starches, 45 parts of polylactic acid, 4 parts of silica, 6 parts of foaming agents and 3 parts of initiators are mixed
Uniformly after, through double screw extruder foam shaping by extrusion to get be 3.5mm to particle diameter, density 0.64g/cm3Drop
The foaming biomass fiber composite material of solution.
Specifically, foaming agent is rosin soap foaming agent and ADC foaming agent according to mixture made of mass ratio 1:1.
Specifically, initiator is BPO.
In the present embodiment, the feeding revolving speed of double screw extruder is 1rpm, and extrusion revolving speed is 130rpm.
The temperature parameter of each section of double screw extruder is as shown in table 1 below:
The temperature setting of each section of 1. double screw extruder of table
The density of degradable foaming biomass fiber composite material is 0.64g/cm prepared by the present invention3, in compost
Under degradation condition, by 174 days, degradation rate reached 93%.
Embodiment 2:
The preparation method of the degradable foaming biomass fiber composite material of one kind of the present embodiment, comprising the following steps:
Step a, under the conditions of 22 DEG C, after 45 parts of starch and 55 parts of distilled water are mixed and stirred for uniformly, 2 parts of addition is sweet
Oil, 0.4 part of maleic anhydride, and it is stirred continuously the mixture to form colloidal；
Step b, the mixture of colloidal is placed in water-bath or oil bath pan and carries out Heat Gelatinization, heating temperature 85
DEG C, time 30min obtains thick colloid；
Step c, thick colloid is placed in baking oven, drying temperature is 110 DEG C, after toasting 20min, by the solid of drying
100 mesh are crushed to, modified starch is obtained；
Step d, 35 portions of modified starches, 48 parts of polylactic acid, 3 parts of silica, 2 parts of foaming agents and 1 part of initiator are mixed
Uniformly after, through double screw extruder foam shaping by extrusion to get be 3.2mm to particle diameter, density 0.45g/cm3Drop
The foaming biomass fiber composite material of solution.
Specifically, foaming agent is sodium bicarbonate foaming agent.
Specifically, initiator is TPO.
In the present embodiment, the feeding revolving speed of double screw extruder is 1.2rpm, and extrusion revolving speed is 120rpm.
The temperature parameter of each section of double screw extruder is as shown in table 2 below:
The temperature setting of each section of 2. double screw extruder of table
The density of degradable foaming biomass fiber composite material is 0.45g/cm prepared by the present invention3, in compost
Under degradation condition, by 181 days, degradation rate reached 95%.
Embodiment 3:
The preparation method of the degradable foaming biomass fiber composite material of one kind of the present embodiment, comprising the following steps:
Step a, under the conditions of 25 DEG C, after 60 parts of starch and 45 parts of distilled water are mixed and stirred for uniformly, 8 parts of addition is sweet
Oil, 1 part of maleic anhydride, and it is stirred continuously the mixture to form colloidal；
Step b, the mixture of colloidal is placed in water-bath or oil bath pan and carries out Heat Gelatinization, heating temperature 100
DEG C, time 10min obtains thick colloid；
Step c, thick colloid is placed in baking oven, drying temperature is 120 DEG C, after toasting 10min, by the solid of drying
230 mesh are crushed to, modified starch is obtained；
Step d, 45 portions of modified starches, 40 parts of polylactic acid, 5 parts of silica, 8 parts of foaming agents and 4 parts of initiators are mixed
Uniformly after, through double screw extruder foam shaping by extrusion to get be 3.8mm to particle diameter, density 0.56g/cm3Drop
The foaming biomass fiber composite material of solution.
Specifically, foaming agent is AC foaming agent and sodium bicarbonate foaming agent according to mixture made of mass ratio 3:1.
Specifically, initiator is DCP.
In the present embodiment, the feeding revolving speed of double screw extruder is 0.8rpm, and extrusion revolving speed is 160rpm.
The temperature parameter of each section of double screw extruder is as shown in table 3 below:
The temperature setting of each section of 3. double screw extruder of table
The density of degradable foaming biomass fiber composite material is 0.56g/cm prepared by the present invention3, in compost
Under degradation condition, by 150 days, degradation rate reached 91%.
Embodiment 4:
The preparation method of the degradable foaming biomass fiber composite material of one kind of the present embodiment, comprising the following steps:
Step a, under the conditions of 21 DEG C, after 56 parts of starch and 60 parts of distilled water are mixed and stirred for uniformly, 6 parts of addition is sweet
Oil, 0.2 part of maleic anhydride, and it is stirred continuously the mixture to form colloidal；
Step b, the mixture of colloidal is placed in water-bath or oil bath pan and carries out Heat Gelatinization, heating temperature 90
DEG C, time 15min obtains thick colloid；
Step c, thick colloid is placed in baking oven, drying temperature is 105 DEG C, after toasting 30min, by the solid of drying
300 mesh are crushed to, modified starch is obtained；
Step d, 50 portions of modified starches, 42 parts of polylactic acid, 4 parts of silica, 10 parts of foaming agents and 2 parts of initiators are mixed
Uniformly after, through double screw extruder foam shaping by extrusion to get be 3.6mm to particle diameter, density 0.8g/cm3Drop
The foaming biomass fiber composite material of solution.
Specifically, foaming agent is AC foaming agent.
Specifically, initiator is BPO.
In the present embodiment, the feeding revolving speed of double screw extruder is 1.4rpm, and extrusion revolving speed is 150rpm.
The temperature parameter of each section of double screw extruder is as shown in table 4 below:
The temperature setting of each section of 4. double screw extruder of table
The density of degradable foaming biomass fiber composite material is 0.8g/cm prepared by the present invention3, dropped in compost
Under the conditions of solution, by 190 days, degradation rate reached 96%.
Claims (7)
1. a kind of degradable foaming biomass fiber composite material, it is characterised in that: be made of raw material from the following weight:
Wherein, the modified starch is by 45-60 parts of starch, 45-60 parts of distilled water, 2-8 parts of glycerol, 0.2-1 parts of maleic anhydrides
Made of being modified by gelatinization；
The density of the degradable foaming biomass fiber composite material is 0.45-0.8g/cm3。
2. the degradable foaming biomass fiber composite material of one kind according to claim 1, it is characterised in that: this is compound
Material is to be made of raw material from the following weight:
3. the degradable foaming biomass fiber composite material of one kind according to claim 1, it is characterised in that: the hair
Infusion is at least one of AC foaming agent, rosin soap foaming agent, sodium bicarbonate foaming agent and ADC foaming agent.
4. the degradable foaming biomass fiber composite material of one kind according to claim 1, it is characterised in that: described to draw
Sending out agent is any one in BPO, DCP and TPO.
5. a kind of preparation method of degradable foaming biomass fiber composite material as described in claim 1, feature exist
In: the following steps are included:
Step a, under the conditions of 20-25 DEG C, after 45-60 parts of starch and 45-60 parts of distilled water are mixed and stirred for uniformly, 2- is added
8 parts of glycerol, 0.2-1 parts of maleic anhydrides, and it is stirred continuously the mixture to form colloidal；
Step b, the mixture of colloidal is placed in water-bath or oil bath pan and carries out Heat Gelatinization, heating temperature 85-100
DEG C, time 10-30min obtains thick colloid；
Step c, thick colloid is placed in baking oven, drying temperature is 100-120 DEG C, after toasting 10-30min, by drying
Solid is crushed to 100-300 mesh, obtains modified starch；
Step d, by 30-50 portions of modified starches, 40-50 parts of polylactic acid, 3-5 parts of silica, 2-10 parts of foaming agents and 0.5-4 parts
Initiator after mixing, arrives the degradable foaming biomass fiber through double screw extruder foam shaping by extrusion
Composite material, wherein the temperature parameter of each section of double screw extruder is as follows:
One area: 140-145 DEG C, 2nd area: 150-155 DEG C, 3rd area: 165-170 DEG C, 4th area: 170-175 DEG C, 5th area: 170-175
DEG C, 6th area: 170-175 DEG C, 7th area: 170-175 DEG C, 8th area: 160-165 DEG C, head: 150-155 DEG C.
6. the preparation method of the degradable foaming biomass fiber composite material of one kind according to claim 5, feature
Be: the particle diameter of the degradable foaming biomass fiber composite material is 3.2-3.8mm.
7. the preparation method of the degradable foaming biomass fiber composite material of one kind according to claim 5, feature
Be: in step d, the feeding revolving speed of double screw extruder is 0.8-1.4rpm, and extrusion revolving speed is 120-160rpm.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110432028A (en) * | 2019-08-17 | 2019-11-12 | 黄启柳 | It is organic to release flowerpot production technology certainly |
| CN111423624A (en) * | 2020-05-07 | 2020-07-17 | 中山市淀堂环保科技有限公司 | Biodegradable filled foam and production process thereof |
-
2018
- 2018-08-29 CN CN201810995905.5A patent/CN109181253A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110432028A (en) * | 2019-08-17 | 2019-11-12 | 黄启柳 | It is organic to release flowerpot production technology certainly |
| CN111423624A (en) * | 2020-05-07 | 2020-07-17 | 中山市淀堂环保科技有限公司 | Biodegradable filled foam and production process thereof |
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